package ooday05;

public class StaticFinalDemo {
    public static void main(String[] args) {
        System.out.println(Loo.PI);
        System.out.println(Loo.num);
        Loo.num = 6;
        System.out.println(Loo.num);
    }
}

class Loo{
    public static final double PI = 3.14159;//常量
    public static double num = 5;//静态变量
}
